Abstract
The goal of this experiment is to understand the theory behind bomb calorimetry and use it to determine the enthalpy of combustion of naphthalene. First, the bomb calorimeter was standardized using benzoic acid and the average heat capacity of the bomb calorimeter was calculated to be 10.60.3205 kJ/K. From that, the average m, and f were found to be -526615.66kJ/mol, with a percent difference of 3.31%, -52600.0015kJ/mol with a percent difference of 1.99%, and -185.50.0013kJ/mol with a percent difference of 129.9%, respectively. Overall, the experiment showed that heats of combustions of substances can be determined via bomb calorimetry.
Introduction
The first law of thermodynamics states that energy is conserved.1 Using that law it can be said that the change in the internal energy of a system () depends on the heat added (q) to the system and the work (w) done by the system.1 Equation 1 illustrates the relationship between the three variables. …show more content…
This bomb calorimeter is used to determine the heat of combustion of naphthalene. Equation 2 shows the heat of combustion of naphthalene.
C10H8 (s) + 12O2 (g) 10CO2 (g) + 4H2O (l) (2)
The heat of combustion of benzoic acid in equation 3 is also shown because it is used to standardize the bomb
The goal of this experiment is to understand the theory behind bomb calorimetry and use it to determine the enthalpy of combustion of naphthalene. First, the bomb calorimeter was standardized using benzoic acid and the average heat capacity of the bomb calorimeter was calculated to be 10.60.3205 kJ/K. From that, the average m, and f were found to be -526615.66kJ/mol, with a percent difference of 3.31%, -52600.0015kJ/mol with a percent difference of 1.99%, and -185.50.0013kJ/mol with a percent difference of 129.9%, respectively. Overall, the experiment showed that heats of combustions of substances can be determined via bomb calorimetry.
Introduction
The first law of thermodynamics states that energy is conserved.1 Using that law it can be said that the change in the internal energy of a system () depends on the heat added (q) to the system and the work (w) done by the system.1 Equation 1 illustrates the relationship between the three variables. …show more content…
This bomb calorimeter is used to determine the heat of combustion of naphthalene. Equation 2 shows the heat of combustion of naphthalene.
C10H8 (s) + 12O2 (g) 10CO2 (g) + 4H2O (l) (2)
The heat of combustion of benzoic acid in equation 3 is also shown because it is used to standardize the bomb